Republican National Committee Chairman Reince Priebus slammed Democrats Wednesday for pledging the votes to override any rejection by Congress of the Iran nuclear deal, saying it "reaffirmed their status as a party that cannot be trusted to keep America safe."

"The Clinton-Obama Iran deal not only falls short of the administration's own goals, it empowers the world’s leading state sponsor of terrorism while never ultimately blocking Iran's path to a nuclear weapon."

Maryland Democratic Sen. Barbara Mikulski said she would support the deal with Tehran, giving Obama the 34 Senate votes needed to sustain a veto of any congressional resolution disapproving the deal.

Thirty-two Senate Democrats and two independents who vote with the Democrats now support the agreement.

The accord, announced on July 14, exchanges sanctions relief for Iran for Tehran's agreeing to curtail its nuclear program. It could send as much as $150 billion into Iran that had been held up through sanctions.

Congress has until Sept. 17 to approve or reject the deal.

"Voters overwhelmingly want Congress to vote down this deal, rightly believing it will make the world less safe," Priebus said. "Since Democrats in Congress won’t listen, voters will have no choice but to hold Hillary Clinton accountable for her central role in forging this dangerous agreement."

Republican National Committee Chairman Reince Priebus slammed Democrats Wednesday for pledging the votes to override any rejection by Congress of the Iran nuclear deal, saying it "reaffirmed their status as a party that cannot be trusted to keep America safe."